Haste

Haste is a category of stats that encompasses ability haste, basic ability haste, ultimate haste, item haste, and summoner spell haste. It increases the casting speed (decreases the cooldown) of an effect or ability, depending on the specific form of haste.

All forms of haste reduce an effect's total cooldown which is determined at the moment the effect is activated. Haste does not affect static cooldowns nor on-target cooldowns, unless otherwise stated.

Haste replaced  cooldown reduction as an intuitive stat that provides additive increases, removing the need for an artificial cap. Every point of haste has the same benefit compared to the base casting rate; analogous to the way armor and magic resist are calculated.

Reducing ability cooldowns

Main article: Haste/Reducing ability cooldowns

Haste is a generally accessible means to reduce ability cooldowns, but it is not the only method. Some specific effects will decrease the current (remaining) cooldown of abilities when the effect triggers.

Formula

Haste reduces the cooldown of an effect according to this formula:

$\pagecolor{Black}\color{Black}{\rm Reduced\ cooldown}={\rm Base\ Cooldown}\times{100 \over 100+{\rm Haste}}$

Informally, this means that the casting rate (or casting speed) increases by 1% for every point of haste. For example, adding 100 points of haste will double the casting speed (+100%), cutting the cooldown time by half (50% cooldown reduction); adding another 100 points of haste would result in +200% (or triple) casting speed, cutting the original cooldown time by two thirds (~66.6% cooldown reduction).

Values of (ability) haste higher than ~100 rarely occur in regular matches. This means a reduced cooldown of ~50% is the upper limit to expect.

Cooldown reduction (in percent) may be determined from haste according to this formula:

$\pagecolor{Black}\color{Black}{\rm Cooldown\ reduction}={{\rm Haste}\over {\rm Haste}+100}\times{100}$

The formula shows how the cooldown reduction can never reach 100% by adding haste: each additional point of haste gives less cooldown reduction. However, haste does not have diminishing returns in regards to casting speed. Conversely, Cooldown reduction as a percentage value has increasing, potentially unlimited returns that bring the casting speed to infinity as it approaches 100%. This makes it hard to intuitively grasp the value of cooldown reduction compared to the base rate of the effect.

Ability haste

 Ability haste, or  AH, is a statistic that reduces the cooldowns of champion abilities by a percentage. It is the most common form of haste and it is the only haste stat that is displayed by the game client in the HUD's player stat overview. It is capped at 500, which is equivalent to 83.3% cooldown reduction.

• Ability haste itself stacks additively, and each point acquired directly adds to the statistic (1:1).

Ability haste can be gained from buffs, items and runes.

Gold Value ​​​

• Ability haste has a gold value of 50 per point.

Scaling with ability haste

It is important to note that any cooldown that can be reduced through cooldown reduction, will innately scale off of haste (which is, of course, cooldown reduction). However, certain mechanics are special-cased to be affected by ability haste whereas they normally would not be. There are currently no such effects.

Increasing ability haste

Items

This table is automatically generated based on the data from Module:ItemData/data.

Item	Cost	Amount	Availability
Abyssal Mask Abyssal Mask	2650	15	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Aegis of the Legion Aegis of the Legion	1100	10	Nexus Blitz, Classic Summoner's Rift 5v5, All Random All Mid
Anathema's Chains Anathema's Chains	2500	15	Arena
Archangel's Staff Archangel's Staff	2900	25	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Axiom Arc Axiom Arc	3000	20	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Bami's Cinder Bami's Cinder	900	5	Nexus Blitz, Classic Summoner's Rift 5v5, All Random All Mid
Bandleglass Mirror Bandleglass Mirror	900	10	Nexus Blitz, Classic Summoner's Rift 5v5, All Random All Mid
Black Cleaver Black Cleaver	3000	20	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Black Hole Gauntlet Black Hole Gauntlet	0	25	Arena
Blackfire Torch Blackfire Torch	2800	20	Nexus Blitz, Classic Summoner's Rift 5v5, All Random All Mid
Bloodletter's Curse Bloodletter's Curse	2900	15	Arena, Classic Summoner's Rift 5v5, All Random All Mid
Caulfield's Warhammer Caulfield's Warhammer	1050	10	Nexus Blitz, Classic Summoner's Rift 5v5, All Random All Mid
Chempunk Chainsword Chempunk Chainsword	3100	15	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Chemtech Putrifier Chemtech Putrifier	2500	30	Arena
Cosmic Drive Cosmic Drive	3000	25	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Crown of the Shattered Queen Crown of the Shattered Queen	0	25	Arena
Cryptbloom Cryptbloom	2850	15	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Death's Dance Death's Dance	3300	15	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Demonic Embrace Demonic Embrace	0	30	Arena
Detonation Orb Detonation Orb	0	20	Arena
Divine Sunderer Divine Sunderer	0	20	Arena
Duskblade of Draktharr Duskblade of Draktharr	0	20	Arena
Echoes of Helia Echoes of Helia	2200	20	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Eclipse Eclipse	2900	15	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Eleisa's Miracle Eleisa's Miracle	0	25	Arena
Empyrean Promise Empyrean Promise	0	30	Arena
Essence Reaver Essence Reaver	2900	15	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Everfrost Everfrost	0	25	Arena
Fiendish Codex Fiendish Codex	850	10	Nexus Blitz, Classic Summoner's Rift 5v5, All Random All Mid
Fimbulwinter Fimbulwinter	2400	15	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Force of Entropy Force of Entropy	0	30	Arena
Frozen Heart Frozen Heart	2500	20	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Gambler's Blade Gambler's Blade	0	40	Arena
Gargoyle Stoneplate Gargoyle Stoneplate	0	15	Arena
Glacial Buckler Glacial Buckler	900	10	Nexus Blitz, Classic Summoner's Rift 5v5, All Random All Mid
Glowing Mote Glowing Mote	250	5	Nexus Blitz, Classic Summoner's Rift 5v5, All Random All Mid
Guardian's Amulet Guardian's Amulet	500	20	Arena
Guardian's Blade Guardian's Blade	950	15	Arena, All Random All Mid
Guardian's Dirk Guardian's Dirk	500	10	Arena
Guardian's Shroud Guardian's Shroud	500	15	Arena
Hemomancer's Helm Hemomancer's Helm	0	30	Arena
Hextech Rocketbelt Hextech Rocketbelt	2600	15	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Hollow Radiance Hollow Radiance	2800	10	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Horizon Focus Horizon Focus	2700	25	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Hubris Hubris	3000	10	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Iceborn Gauntlet Iceborn Gauntlet	2900	15	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Imperial Mandate Imperial Mandate	2250	20	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Innervating Locket Innervating Locket	0	20	Arena
Ionian Boots of Lucidity Ionian Boots of Lucidity	900	10	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Kindlegem Kindlegem	800	10	Nexus Blitz, Classic Summoner's Rift 5v5, All Random All Mid
Kinkou Jitte Kinkou Jitte	0	30	Arena
Knight's Vow Knight's Vow	2300	10	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Lich Bane Lich Bane	3200	10	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Locket of the Iron Solari Locket of the Iron Solari	2200	10	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Lost Chapter Lost Chapter	1200	10	Nexus Blitz, Classic Summoner's Rift 5v5, All Random All Mid
Luden's Companion Luden's Companion	2850	10	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Malignance Malignance	2700	15	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Manamune Manamune	2900	15	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Maw of Malmortius Maw of Malmortius	3100	15	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Mikael's Blessing Mikael's Blessing	2300	15	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Moonstone Renewer Moonstone Renewer	2200	20	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Morellonomicon Morellonomicon	2950	15	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Muramana Muramana	2900	15	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Nashor's Tooth Nashor's Tooth	3000	15	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Night Harvester Night Harvester	0	40	Arena
Profane Hydra Profane Hydra	3200	10	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Prowler's Claw Prowler's Claw	0	20	Arena
Puppeteer Puppeteer	0	40	Arena
Pyromancer's Cloak Pyromancer's Cloak	0	15	Arena
Ravenous Hydra Ravenous Hydra	3300	15	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Redemption Redemption	2300	15	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Riftmaker Riftmaker	3100	15	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Rite of Ruin Rite of Ruin	2500	15	Arena
Runecarver Runecarver	0	20	Arena
Sanguine Gift Sanguine Gift	0	20	Arena
Seraph's Embrace Seraph's Embrace	2900	25	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Serylda's Grudge Serylda's Grudge	3000	20	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Sheen Sheen	900	10	Nexus Blitz, Classic Summoner's Rift 5v5, All Random All Mid
Shurelya's Battlesong Shurelya's Battlesong	2200	15	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Spirit Visage Spirit Visage	2700	10	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Staff of Flowing Water Staff of Flowing Water	2250	15	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Sundered Sky Sundered Sky	3100	10	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Sunfire Aegis Sunfire Aegis	2700	10	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Sword of Blossoming Dawn Sword of Blossoming Dawn	2500	15	Arena
Talisman of Ascension Talisman of Ascension	0	0	Arena
The Brutalizer The Brutalizer	1337	10	Nexus Blitz, Classic Summoner's Rift 5v5, All Random All Mid
The Golden Spatula The Golden Spatula	0	20	Arena
Trinity Force Trinity Force	3333	15	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Umbral Glaive Umbral Glaive	2600	10	Nexus Blitz, Classic Summoner's Rift 5v5, All Random All Mid
Unending Despair Unending Despair	2800	10	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Vigilant Wardstone Vigilant Wardstone	2300	20	Classic Summoner's Rift 5v5
Voltaic Cyclosword Voltaic Cyclosword	3000	10	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Watchful Wardstone Watchful Wardstone	1100	10	Classic Summoner's Rift 5v5
Winter's Approach Winter's Approach	2400	15	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid
Wooglet's Witchcap Wooglet's Witchcap	0	20	Arena
Wordless Promise Wordless Promise	2500	25	Arena
Zeke's Convergence Zeke's Convergence	2300	10	Nexus Blitz, Arena, Classic Summoner's Rift 5v5, All Random All Mid

Champion abilities

• Bel'Veth's Void Surge grants ability haste to its per-direction cooldown
• Syndra's Unleashed Power grants ability haste to Dark Sphere

Runes

• Jack of All Trades
• Transcendence
• Ability haste rune shard

Neutral buffs

• Crest of Insight
• Hextech Prowess
• Infernal Cinder

Basic ability haste

Basic ability haste reduces the cooldowns of champion basic abilities. It stacks additively with ability haste.

Increasing basic ability haste

Champion abilities

• Sona's Accelerando

Items

• Spear of Shojin

Runes

• Legend: Haste

Ultimate haste

Ultimate haste reduces the cooldowns of champion ultimate abilities. It stacks additively with ability haste.

Increasing ultimate haste

• Experimental Hexplate
• Malignance
• Ultimate Hunter

Item haste

Item haste reduces the cooldowns of items with cooldowns, including passives and actives (trinkets count as active items). It stacks additively with ability haste for the cooldowns of items that scale with the stat.

Increasing item haste

• Cosmic Insight

• Item haste
• Equivalent CDR
• Item Cooldowns

Item Haste
	None
None	0
	10

Item Haste (Equivalent in CDR)
	None
None	0%
	9.09%

Item Cooldown
Items	Base Cooldown
	1.5	1.36
	3	2.73
	5	4.55
	6	5.45
	8	7.27
	9	8.18
	10	9.09
	12	10.91
	15	13.64
	18	16.36
	30	27.27
	40	36.36
	45	40.91
	50	45.45
	60	54.55
	75	68.18
	90	81.82
	120	109.09
	300	272.73

Summoner spell haste

Summoner spell haste reduces the cooldowns of summoner spells.

Increasing summoner spell haste

• Cosmic Insight
• Ionian Boots of Lucidity
• Howling Abyss aura

Summoner spell haste

Summoner's Rift
Base cooldown ▶	360s ()	300s ()	240s ()	180s ()	90s ()	20s ()
▼  Haste
10 ()	327.27s	272.73s	218.18s	163.64s	81.82s	18.18s
18 ()	305.08s	254.24s	203.39s	152.54s	76.27s	16.95s
28 ( )	281.25s	234.38s	187.5s	140.63s	70.31s	15.63s
Howling Abyss
Base cooldown ▶		300s ()	240s ()	180s ()	80s ()	20s ()
▼  Haste
70 ()		176.47s	141.18s	105.88s	47.06s	11.76s
80 ()		166.67s	133.33s	100s	44.44s	11.11s
88 ()		159.57s	127.66s	95.74s	42.55s	10.64s
98 ()		151.52s	121.21s	90.91s	40.4s	10.1s

Trivia

• There are only two runes that can have their cooldown reduced:
  • Arcane Comet has its remaining cooldown be reduced by a percentage upon hitting an enemy champion with ability damage.
  • Dark Harvest has its cooldown reset to 1.5 seconds upon scoring a takedown against an enemy champion.

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Highest Ability Haste

Summoner's Rift

Last updated: June 4th, 2024, patch V14.11

• The highest attainable ability haste in Summoner's Rift is 221 AH (attainable by all champions), this is equivalent to 68.85% cooldown reduction.

• Ally:
  • Ornn
• Items:
  • Axiom Arc*
  • Cosmic Drive
  • Archangel's Staff
  • Blackfire Torch*
  • Luden's Companion*
  • Malignance*
    • *Any of these can be masterwork
• Runes:
  • Transcendence
  • Jack of All Trades
  • Ability haste rune shard
• Buffs:
  • Crest of Insight
  • Hextech Prowess x 4

• Ability haste:
  • Items = 41 + 25 + 25 + 25 + 25 + 25 = 166 ability haste
  • Runes = 10 + 7 + 8 = 25 ability haste
  • Buff = 10 + 20 = 30 ability haste
    • Total ability haste = 170 + 26 + 30 = 221

Arena

Last updated: August 12, 2023, patch V13.15

• The highest attainable ability haste in Arena is 1244.43, this is equivalent to 92.56% cooldown reduction.
  • This calculation excludes Ornn's Masterwork items as well as the augments that can grant infinite amounts of ability haste, such as Accelerating Sorcery. Champions that can gain an infinite amount of a stat to scale with ability haste also do not count.

• Champions:
  • K'Sante (level 18)
• Ally:
  • Any champion
• Augments:
  • Chauffeur - 100 AH
  • Dashing - 200 AH (on dash/blink spells)
  • Eureka - 20% AP AH
  • Thief's Gloves - 30% increased AH on items
  • Banner of Command - 15% increased AP (augment for ally)
• Items:
  • Cosmic Drive
  • Horizon Focus
  • Juice of Haste
  • Juice of Power
  • Luden's Tempest
  • Night Harvester
  • Rabadon's Deathcap
  • Staff of Flowing Water (on ally)
  • Shurelya's Battlesong

Since most of K'Sante's abilities are dash or blink abilities, the Dashing augment can be taken into account as full value for calculations.

• Ability Haste
  • Eureka AP to AH conversion
    • Total AP: 100 + 100 + 100 + 90 + 90 (level 18) + 80 + 45 + 30 × 1.4 (from Rabadon's Deathcap) × 1.3 (from Thief's Gloves) × 1.15 (from Banner of Command) × 1.1 (from Juice of Power) = 1461.96
      • Eureka AH: 1461.96 × 0.2 = 292.39
        • Total AH with other augments: 292.39 + 200 + 100 = 592.39
  • Item AH
    • Total AH: 55 + 40 + 35 + 35 + 20 = 185
  • Buff AH
    • Total AH: 35 + 20 = 55

Total Ability Haste Calculation = (592.39 + 185 + 55) × 1.3 × 1.15 = 1244.43

Champion statistics